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Date: Thu, 2 Nov 2000 15:29:08 -0500
From: Robert A Cohen <bbq@ESU.EDU>
Subject: Re: Color constancy
Why is the purple haze *around* the orange instead of coincident with it?
My first impression was that only those with glasses would be able to see
the purple haze (due to dispersion through the glasses) but I had assumed
the colors would be coincident.
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| Robert Cohen Department of Physics |
| East Stroudsburg University |
| bbq@esu.edu East Stroudsburg, PA 18301 |
| http://www.esu.edu/~bbq/ (570) 422-3428 |
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On Thu, 2 Nov 2000, S.Goelzer wrote:
Also, on the subject of color perception, when I show a one of the plasmaflower
light bulbs* some students can see a faint purple haze around the orangeplasma and
others cannot. I think this maybe the result of being able to perceivecolor deeper
into the UV. I can see it clearly, and I find that other students withblue eyes
are more likely too as well.almost
*( this device is a clear glass light bulb with two metal flowers inside
touching, one to each potential. When plugged in, an orange plasma coatseach
flower. The petals, covered with green florescent paint, glow. Adiffraction
grating revealed a spectrum matching mercury.)